The curvature of the endotracheal tube conforms to the shape of the airway with the head held in the neutral position, and is easier to insert then if the tube was straight. This development, largely, is an accident.
1. Methyl anthranilate, also known as MA, methyl 2-aminobenzoate, or carbomethoxyaniline, is an ester of anthranilic acid. The chemical formula for this compound is C8H9NO2. Methyl anthranilate is a clear to pale yellow liquid with a melting point of 24Â°C and a boiling point of 256Â°.n ester is the product of a reaction between an alcohol and an acid, usually an organic acid.3 Methyl anthranilate is derived from the reaction of methanol and anthranilic acid.
Figure 1. Electron micrograph of the anthrax causing bacteria, Bacillus anthracis. Anthrax toxin is a three-protein exotoxin secreted by virulent strains of the bacterium, Bacillus anthracis âthe causative agent of anthrax.The toxin was first discovered by Harry Smith in 1954.Anthrax toxin is composed of a cell-binding protein, known as protective antigen (PA), and two enzyme components, called edema factor (EF) and lethal factor (LF). These three protein components act together to impart their physiological effects.nterestingly, each individual anthrax toxin protein is, in fact, nontoxic. Toxic symptoms are not observed when these proteins are injected individually into laboratory animals. However, the co-injection of PA and EF causes edema, and the co-injection of PA and LF is lethal.